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The Five Cs Of Positive Youth Development In Singapore: Building Adolescent Resilience, Teresa Theodora Jing Yi Tan, Li Neng Lee

Journal of Youth Development

The Five Cs of Positive Youth Development (PYD) model is one of the most empirically discussed frameworks on youth thriving. Generalisability of the model was investigated among 210 middle (15-18 years old) and 250 late (19-25 years old) adolescents in Singapore. The Five Cs of PYD was evaluated as a mediator between intentional self-regulation, social-emotional competencies and family functioning, and the outcome of adolescent resilience. Results validate the model among youths in Singapore and show that the Five Cs of PYD positively predict adolescent resilience. The study extends the global application of the model while highlighting the need to consider …

Mammal Use Of Crossing Structures On Highways In The Southern Blue Ridge Mountains, Chloe E. Horton

All Theses

Road networks are a major driver of habitat fragmentation and wildlife mortality. Wildlife crossing structures (WCS) are a common mitigation strategy with the goal of maintaining landscape connectivity, reducing wildlife-vehicle collisions, and facilitating safe passage across highways. Most research on WCS prioritize large ungulates or carnivores, leaving potential gaps in our understanding of how diverse mammalian communities interact with these features. We investigated spatial, temporal, and behavioral patterns of small-, medium-, and large-bodied mammals using WCS in the southern Blue Ridge Mountains of North Carolina and Tennessee. Using remote camera data from structures on I-40 and I-26 collected from 2018 …

Factors Influencing Swift Fox Reintroduction Success To Fort Belknap Reservation, Montana, Dana Nelson

All Dissertations

Reintroductions are an important conservation tool for reestablishing wildlife populations, and studying the factors influencing reintroduction outcomes is important to improving success rates over time. Swift fox are a small canid native to the short- and mixed grass prairies of western North America that have experienced severe population declines due to habitat loss and poisoning in the late 1800s. While swift fox now occupy approximately 40% of their historic range, reintroduction to northern Montana may promote the species’ long-term persistence, encourage connectivity in an existing range gap, and return species to areas where it is culturally significant. We studied the …

Preferred Plants And Nectar Collecting Times For Honey Production, David Macfawn, Jennifer M.K. O'Keefe, Sophie Warny, Carol Wymer, June Rampy Ponder

Clemson Extension Publishing

This book addresses three important questions for South Carolina beekeepers – which plants are bees in South Carolina using for nectar forage, when bees collect nectar from those plants, and how can understanding nectar foraging habits inform beekeepers as they work to gather specific types of premium honey? In 2021, the South Carolina Beekeeper’s Association, led by David MacFawn, designed and implemented a statewide pollen study, the first in any state in over fifty years, to answer these questions. Informed by data gathered from 19 apiaries across the state, this book contains the results of that study, including large-scale melissopalynological …

Exploring Community Change Of North American Stream Fish Communities Due To Species Introductions, William K. Annis Jr

All Dissertations

The introduction of nonnative species has facilitated global changes in beta diversity, and these changes have been coined biotic homogenization (loss in beta diversity) and differentiation (gain in beta diversity). Homogenization represents a key conservation threat. Therefore it is imperative to understand the processes that allow nonnative species to establish and how these species contribute to beta diversity change. In this dissertation, I assess three key challenges exist in our ability to address these goals. One challenge is that we have inconsistent support among hypotheses of invasion drivers due to context dependency. Context dependency can arise due to differences in …

Lateral Dispersal Of Adult Trichoptera: Flight Distance And Traveling Pattern, Peilin Tan

All Theses

Trichoptera species (caddisfly) are usually used as bio-indictors for surface water quality due to their sensitivity to environmental changes, and if assessing water quality with light-trapped adults, knowing their travelling patterns will improve the accuracy of such assessments. To investigate how far a caddisfly will migrate from their emerging stream, three streams in South Carolina with different widths (Wildcat Creek 1.2 m, Brasstown Creek 11.2 m and Chattooga River 26.95 m) were selected for this study with light traps placed at three distances (0 m, 50 m, 100 m) from the streams. How long and when? Both species richness and …

Caught On Camera: Evaluating Wood Duck (Aix Sponsa) Cavity Occurrence And Trapping Efficiency, Cindy L. Von Haugg

All Theses

Wood ducks (Aix sponsa) garner significant ecologic and economic importance as the second most harvested waterfowl species in two of the four migratory flyways in North America, but the accuracy of population monitoring, relative to other duck species, is stifled by the wood duck’s secretive nature and nesting habitat. As an alternate, population models would improve current assessments, but more data on the demographic vital rates of cavity-nesting wood ducks is needed. I aimed to help bridge this knowledge gap by developing a method to increase data collection efficiency, and with it, accomplish two objectives: 1) Calculate the relative abundance …

Learning From Burning: Connecting Fire Managers And Fire Scientists, Coleman Lloyd Little

All Theses

The fire community is one of transparency and learning, and embedded in its culture is an openness of sharing successes and failures in order to learn and adapt. United by a shared desire to effectively understand and utilize controlled burns to successfully extinguish wildfires and research their lasting effects, fire managers and fire scientists coexist in partnerships commonly referred to as knowledge exchange networks. This research examines one such network, the Consortium of Appalachian Fire Managers and Scientists (CAFMS), through the experiences of some of its members, serving to develop an understanding of how the consortium functions as a knowledge …

Examining Context Dependency Of Invasion Hypotheses At The Continental Scale Using Riverine Fish Communities, Lily Thompson

All Dissertations

Many well-supported hypotheses seek to explain invasion dynamics, but evidence for common patterns among regions and taxa remains inconclusive and often contradictory. Invasion ecology is fundamentally linked to spatial scale, and discrepancies in results among invasion studies may be attributed, in part, to a failure to fully consider scale dependency. In this dissertation, I investigate the sources of inconsistencies across spatial scales and large geographic extents using riverine fish communities across the conterminous United States. To do so, I tested three main ideas. First, that cross-scale interactions contextualize estimated invasion mechanisms among regions. My results demonstrate that local empirical support …

How Is Wildlife Poaching Changing In Uganda And How Can We Understand The Contribution Of Wildlife Protection Efforts At Multiple Scales: Murchison Falls National Park, Uganda., Ingrid Nyonza Nyakabwa

All Dissertations

Wildlife poaching is a critical global issue that poses significant threats to biodiversity, ecological balance, and the long-term sustainability of wildlife in Sub-Saharan Africa. The illicit trade in wildlife and their derivatives continues to grow, fueled by various socio-economic, cultural, and environmental factors. As the demand for wildlife products persists, it is imperative to understand the underlying causes, impacts, and potential solutions to combat this detrimental practice.

This research examined the dimensions of wildlife poaching in and around the area of Murchison Falls National Park in Uganda, the largest and oldest National Park in Uganda. Uganda has experienced success in …

Evaluating The Ability Of Constructed Intertidal Eastern Oyster (Crassostrea Virginica) Reefs To Address Shoreline Erosion In South Carolina, Peter R. Kingsley-Smith, Andrew W. Tweel, Sharleen P. Johnson, Gary W. Sundin, Michael S. Hodges, Benjamin W. Stone, Gregory D. Sorg, Denise M. Sanger

Journal of South Carolina Water Resources

The application of nature-based solutions to address shoreline erosion and the loss of salt marsh in coastal South Carolina has centered around the creation of intertidal oyster (Crassostrea virginica) reefs that act as natural breakwaters. The installation of such living shoreline materials often results in a rapid accumulation of fine sediments, followed by wild oyster recruitment to suitable materials, and then more gradually the growth of salt marshes (primarily Spartina alterniflora). Leveraging more than two decades of oyster reef restoration and living shorelines research at the South Carolina Department of Natural Resources, this study quantitatively assessed performance rates for both …

Hibernating Tricolored Bats At A Southeastern Recreation Site: Microsite Use And Public Perceptions, Rebecca Brown

All Theses

High bat mortality from white-nose syndrome (WNS) has increased the need to manage hibernation sites. Management decisions should be based on science, and when sites are accessible to the public, also need to consider human dimensions. We used Stumphouse Tunnel, a recreation site and tricolored bat (Perimyotis subflavus) hibernaculum in northwestern South Carolina, as a case study to understand potential conflicts between conservation and recreation. The population declined by 90% after the arrival of white-nose syndrome (WNS), followed by stabilization and slight increases. Because the increase was associated with more bats roosting in the publicly accessible section, a potential …

Assessing Recreational User Impacts, Motivations, And Knowledge On The Spread Of Invasive Plant Species In A Managed, Multiple-Use Forest Ecosystem, Crystal Strickland

All Theses

The spread of invasive plants is ecologically and economically detrimental to native ecosystems, animals, and humans. Recreation is one factor that may influence plant dispersal. The impacts of recreation on invasive plant spread are multifaceted and include the physical act of spreading and transporting seeds and vegetation to new areas on clothes, pets, and equipment, as well as the social aspect of outreach and education. Therefore, I used a multifaceted approach to assess the impact of human trafficked areas where recreational activities frequently occur on four known invasive plant species in the Clemson Experimental Forest (CEF) in South Carolina: Microstegium …

Incorporating Human Effects In Quantifying Mechanisms Of Stream Fish Community Structure Using Metacommunity Theory, Lauren E. Stoczynski

All Dissertations

Metacommunity theory incorporates local and regional factors to understand how biotic communities are structured across the landscape. Despite established knowledge of how humans impact aquatic systems, inclusion of anthropogenic factors in metacommunity studies have been largely ignored. Additionally, alpha, beta, and gamma diversity can all be explored at the metacommunity level to investigate mechanistic drivers of community structure. Beta diversity can be further partitioned into turnover and richness difference components, each with different mechanistic drivers. Streams provide an excellent study system for metacommunity research because of the dendritic structure of watersheds and the natural delineation that watershed boundaries provide. Large-extent …

Penalized Estimation Of Autocorrelation, Xiyan Tan

All Dissertations

This dissertation explored the idea of penalized method in estimating the autocorrelation (ACF) and partial autocorrelation (PACF) in order to solve the problem that the sample (partial) autocorrelation underestimates the magnitude of (partial) autocorrelation in stationary time series. Although finite sample bias corrections can be found under specific assumed models, no general formulae are available. We introduce a novel penalized M-estimator for (partial) autocorrelation, with the penalty pushing the estimator toward a target selected from the data. This both encapsulates and differs from previous attempts at penalized estimation for autocorrelation, which shrink the estimator toward the target value of zero. …

Streamflow And Tidal Dynamics In The Lower Pee Dee Basin: Hurricane Impacts, Thomas M. Williams, Bo Song, Daniel Hitchcock, Thomas O'Halloran

Journal of South Carolina Water Resources

Over past years, extreme tropical storm events along the North and South Carolina coasts—and subsequent river flooding—have warranted the need for a better understanding of the hydrologic response to these events to protect life, property, businesses, and natural and cultural resources. Our focus in this study is the Pee Dee and Waccamaw River systems, which ultimately flow into Winyah Bay near Georgetown, South Carolina. River flows, coupled with the tidal nature of these freshwater systems, are complex and difficult to predict. The objective of the work is to analyze publicly available data from gauging stations along those river system as …

Research Club Speaker Series - Dr. Matthew Browning, Matthew Browning

Dean of Libraries Research Club Series

Public awareness of the importance of nature and the Great Outdoors rose sharply during the COVID-19 pandemic. People around the world yearned to be in parks, gardens, urban forests, and blue spaces with water. Lockdown measures severed travel to stress-reducing destinations and focused interest in restorative qualities of the home and neighborhood. Long before COVID-19, planners, architects, designers, ecologists, and engineers advocated for parks and other forms of green infrastructure and its array of ecosystem services. Experimental and epidemiological research shows that nature and being outdoors can improve mental/physical health and well-being as well as catalyze social change, thus reducing …

Long-Term Ecohydrologic Monitoring: A Case Study From The Santee Experimental Forest, South Carolina, Devendra M. Amatya, Carl C. Trettin

Journal of South Carolina Water Resources

Long-term research on gauged watersheds within the USDA Forest Service’s Experimental Forest and Range (EFR) network has contributed substantially to our understanding of relationships among forests, water, and hydrologic processes and watershed management, yet there is only limited information from coastal forests. This article summarizes key findings from hydrology and water-quality studies based on long-term monitoring on first-, second-, and third-order watersheds on the Santee Experimental Forest, which are a part of the headwaters of the east branch of the Cooper River that drains into the harbor of Charleston, South Carolina. The watersheds are representative forest ecosystems that are characteristic …

Crime And Greenspace: Extending The Analysis Across Cities, Samuel Scott Ogletree

All Dissertations

The role of greenspace in urban areas has become a focus of research as municipalities seek to increase the quality of life in cities. Multiple benefits are found to be associated with greenspace, but disservices such as crime are often overlooked. Studies investigating the link between crime and greenspace have revealed mixed results and been limited in geographic scope. This dissertation sought to examine the crime and greenspace relationship, extending the analysis to multiple cities in order to describe how the relationship may vary in different contexts. Additionally, one possible cause of crime, increased temperatures, was investigated to determine how …

Migration Cues And Abundance Estimation Of Imperiled Sturgeon In The Savannah River, Joshua Richard Vine

All Theses

Quantitative understanding of reproductive ecology is vital to the conservation and recovery of imperiled fishes. Atlantic Sturgeon (Acipenser oxyrinchus) and Shortnose Sturgeon (Acipenser brevirostrum) are endangered diadromous fish that range across the Atlantic Coast of North America. Historically, populations of both species were exploited for the black caviar trade range-wide. Although moratoria ended commercial harvest, populations are currently threatened by habitat degradation and alteration. This research represents an initiative to increase our understanding of reproductive behavior for both Atlantic and Shortnose Sturgeon by estimating adult population levels as well as the effects of environmental covariates on the initiation of spawning …

Bacterial Diversity And Ecology Of Two Cryptoendolithic Habitats In The Grand Staircase Escalante National Monument, Utah, Usa, Sukhpreet Kaur

All Dissertations

Sandstone outcrops in the Grand Staircase Escalante National Monument, Utah are host to cryptoendolithic communities dominated by cyanobacteria. These communities produce extracellular polymeric substances that not only aid their survival, but also support other heterotrophic bacteria. Developing a better understanding of the role of these cryptoendolithic communities requires a deeper knowledge of the microbial diversity present. We analyzed the cryptoendolithic bacterial communities in the Jurassic Navajo Sandstone samples collected from several microgeological features associated with a large sandstone dome. These communities clustered into distinctive groups that correlated with topography, suggesting that moisture availability plays an important role in shaping the …

Estimating Animal Abundance By Employing An External Experiment To Account For Detection And Count Bias With An Application To Wintering Ducks In The Mississippi Alluvial Valley, April L. Thomas

All Dissertations

A valid concern when structuring an aerial survey of wildlife populations is the presence of visibility bias. Many studies attempt to correct for visibility bias by including additional parameters in estimators for wildlife abundance. Often these parameters are estimated through data collected during the aerial survey. Some, how-ever, have suggested using an external visibility experiment to estimate parameters being used to adjust for visibility bias. This work considers a bias adjusted estimator, proposed by Pearse et al. (2008), in which the bias correction parameters are esti-mated via an external visibility experiment using decoys in place of the live animals. The …

Plant Community Responses To Bison Reintroduction Within Montana's Northern Great Plains, Nicholas A. Mcmillan

All Theses

In western North America, the rapid loss of native grazers, abiotic disturbance processes (e.g., fire), and human-driven land conversion or degradation have resulted in steadily declining biodiversity and rangeland health. Keystone species restoration and their potential to increase rangeland health are common justifications for bison (Bison bison L.) reintroduction projects throughout North America's Great Plains. Similarly, many other conservation groups also justify the removal of livestock from traditionally cattle-grazed rangelands by citing potential increases in rangeland health or community dynamics following years of heavy use by cattle. Our objective was to assess how ten-years of bison reintroduction and livestock removal …

Forest Management In Coastal Pine Forests: An Investigation Of Prescribed Fire Behavior, Detrital Chemical Composition, And Potential Water Quality Impacts, Thomas Adam Coates

All Dissertations

Prescribed fire, thinning, and mastication are common forest management practices implemented in southern pine forests. These practices affect ecosystem properties differently depending upon the intensity at which they are implemented. One ecosystem property of interest is the chemical composition of forest detritus, commonly referred to as the litter and duff. This material is largely responsible for the replenishment of organic resources into soils. It may also be a primary contributor to surface water quality. In this study we were given an opportunity to evaluate two long-term forest management strategies at two sites along the South Carolina coastal plain to determine …

Ecological Consequences Of Water Loss Under Climate Change In Small Ectotherms, Eric Alexander Riddell

All Dissertations

Warming climates threaten to reduce biodiversity across the planet, yet the capacity of organisms to minimize the effects of climate change are rarely considered in current ecological predictions of climate change. Organisms can minimize the effect of warming through behavioral, physiological, and morphological processes that limit exposure to lethal conditions or improve performance. Therefore, integrating these mechanisms into ecological models might improve predictions on the loss of biodiversity under climate change. For my dissertation, I focus on the physiological processes that influence habitat suitability in a group of terrestrial, lungless salamanders (Plethodon spp.) found in the core of the global …

A Comparative, Ecological Analysis Of Male-To-Female Intimate Partner Violence In The United States And Marlboro County, South Carolina, Hannah M. Jefferies

All Theses

Previous intimate partner violence (IPV) research has indicated that many factors potentially influence IPV. These include the attributes of the woman and her personal history, characteristics of her partner or the partnership, dynamics of the family unit, and features of the community or society in which they live. Numerous theories have been advanced to explain why various factors are related to IPV. Separately, these theories fail to explain the breadth of factors associated with IPV. Ecological theories, however, posit that factors at various levels of a social ecology interact with one another to contribute to an observed phenomenon. Due to …

Enhancing The Methane Yield Of A Landfill Leachate Bioreactor, Paul Vecchiarelli

All Theses

Our thriving modern society requires unprecedented amounts of natural resources to maintain pace with rapidly evolving standards of living in industrialized regions. Due to population growth and wide-scale urbanization, over 3.5x106 metric tons of solid wastes are produced daily around the world. In addition to land, water, and raw material strain generated by solid waste dumping, pristine resources are needed for food, energy, and potable water — instead being used through waste management. Reducing landfill leachate volume and toxicity while deriving value-added products from leachate is a sustainable alternative to traditional solid waste management. Carbon mass balances of biomass grown …

Morphological And Ecological Characterization Of Opuntia Miller On The Coast Of South Carolina, Kirk Holmes

All Theses

The genus Opuntia Miller is one of the most misunderstood and ignored genera of plants occurring in the southeastern United States. This study focused on the clarification of Opuntia stricta (Haw.) Haw., Opuntia macrarthra Gibbes, Opuntia pusilla (Haw.), Opuntia dillenii (Ker Gawl.) Haw. and Opuntia tunoidea Gibbes on the coast of South Carolina. A comprehensive literature review was completed to gather an understanding of Opuntia biology, species concepts and geographic range. The objectives of the morphological study were to determine if Opuntia taxa matching past descriptions of the five species chosen were present, what the morphological characteristics of the individuals …

Ecology Of Megacopta Cribraria (Hemiptera: Plataspidae) And Implications For Management On Soybean, Francesca Louise Stubbins

All Dissertations

Megacopta cribraria (Fabricius) (Hemiptera: Plataspidae) has spread through thirteen states and the District of Columbia since accidental introduction into the United States in 2009. The potential impacts to soybean production necessitated research into the ecology and management of the plataspid in its new invasive range. A two year study in South Carolina using sweep-net and beat-cloth sampling generated sampling plans for M. cribraria population estimates and sequential sampling plans for pest management decision making. At all adult and nymph densities fewer sweep net samples were required for population estimations compared with the number of beat cloth samples. Sequential sampling reduced …

Design, Construction, And Treatment Performance Of A Demonstration Constructed Wetland System For Coal Bed Methane Produced Water, Ruthanne Elise Coffey

All Theses

Constructed wetland treatment systems (CWTSs) have been used to renovate produced water (PW) from natural gas for reuse or discharge. The objectives of this study were to 1) characterize PW from coal bed methane (CBM), a type of unconventional gas, at a producing field in the Black Warrior Basin and identify constituents of concern (COCs); 2) design and construct an on-site demonstration CWTS to decrease COC concentrations; 3) assess treatment performance by measuring removal extents, efficiencies, and rates; and 4) compare treatment performance of wetlands with two organic carbon amendments (AquaSmartTM and shredded hardwood mulch). The demonstration CWTS design enabled …